<!DOCTYPE html>
<html>

<head>
  <meta charset="UTF-8" />
  <title>姓名案例-methods实现</title>
  <!-- 引入Vue -->
  <script type="text/javascript" src="../js/vue.js"></script>
</head>

<body>
  <!-- 准备好一个容器-->
  <div id="root">
    姓：<input type="text" v-model="firstName" /> <br /><br />
    名：<input type="text" v-model="lastName" /> <br /><br />
    <!--  fullName加括号表示用它的返回值进行插值 -->
    全名：<span>{{fullName()}}</span>
  </div>
</body>

<script type="text/javascript">
  Vue.config.productionTip = false; // 阻止Vue在启动时生成生产提示。

  const vm = new Vue({
    el: "#root",
    data: {
      firstName: "张",
      lastName: "三"
    },
    methods: {
      fullName() {
        console.log("@---fullName");
        return this.firstName + "-" + this.lastName;
      }
    }
  });
</script>

</html>